In the hot summer, the temperature of the culture pond is increased, and the water body is eutrophicated, which leads to the large-scale reproduction of cyanobacteria, which leads to the formation of a layer of blue-green and scented floating foam on the water surface of the pond, which is called “water bloomâ€. It is very unfavorable for the growth of aquatic animals, so it is necessary for the farmers to do the cyanobacteria treatment in high temperature weather.
First, the damage of cyanobacteria
1. The density of cyanobacteria is high, and the metabolism in the high temperature period is fast. If the nutrients are not supplemented in time, or the nutrition is uneven, the algae will be aging and die. When the algae protein in the cyanobacteria is decomposed by bacteria, it will produce toxic substances such as hydrogen sulfide, which may cause poisoning death in farm animals.
2. The cyanobacteria proliferate for a long time, causing the pool water to have low dissolved oxygen or lack of oxygen at night, causing aquatic products to float or suffocate and dying, creating conditions for other disease outbreaks.
3. The algal toxin produced by cyanobacteria causes aquatic poisoning and induces disease.
Second, the factors of cyanobacteria outbreak
1. The water grass rots and the temperature of the culture pond is suitable.
2, the farm environment is poor, the quality of the deterioration,
3. The farm is fertile for a long time, and the pond has more organic matter.
4, eat unbeaten a lot of upswing, or grass roots rot.
5, there is no grass in the water, or the water body is long-term leeches.
6, the water grass is too strong, the pH is high for a long time.
7. Excessive amount of bait, resulting in a large amount of residual bait feces in the pond, prone to cyanobacteria.
Third, the method of dealing with cyanobacteria
1. Algae are made from algae, so that other beneficial algae form dominant algae.
2, using algae to make algae, a large number of bacteria, through the bacteria and cyanobacteria competition nutrition.
3, a large number of water changes on a regular basis, through the cultivation of algae, bacteria, so that the pond reached the balance of bacteria and algae.
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